It's possible for `IDiaSymbol::get_name` to return S_OK and provide
and empty string. I haven't figured out the exact root cause yet
(the symbols in question are coming from the Rust standard library),
but FUNC lines with missing function names break the processor and
so we should never do it. This change makes it output "<name omitted>"
which matches the behavior of the DWARF dumping code.
Review URL: https://codereview.chromium.org/1985643004 .
MozReview-Commit-ID: E8jZZM5KVtJ
--HG--
extra : rebase_source : 7236563a7a4bada7c7126cebd24f3551e70919ae
bebd89cd61